Fix minstake

[Jayashsatolia403]

Fixes

Changes

Need to be mentioned in CHANGELOG.md?

Tests

Tasks to complete before merging PR:

• Ensure system tests are passing. If not Run them manually to check for any regressions 📋
• Do any new system tests need added to test this change? do any existing system tests need updated? If so create a PR at 0chain/system_test
• Merge your system tests PR to master AFTER merging this PR

Associated PRs (Link as appropriate):

• blobber:
• gosdk:
• system_test:
• zboxcli:
• zwalletcli:
• Other: ...

[codecov-commenter]

Codecov Report

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@@              Coverage Diff               @@
##             sprint-1.11    #2843   +/-   ##
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  Coverage               ?   28.69%           
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  Files                  ?      394           
  Lines                  ?    66366           
  Branches               ?        0           
==============================================
  Hits                   ?    19041           
  Misses                 ?    45006           
  Partials               ?     2319           

Flag	Coverage Δ
Unit-Tests	28.69% <0.00%> (?)

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[service-0chain]

Manual system tests [failure] with the following config

config	value
tests skipped	false
system-tests
gosdk	NOT OVERRIDDEN
zboxcli
zwalletcli
0chain	fix/minstake
blobber
authorizer
0box
0dns

[dabasov]

lgtm